Lock



A. WARTIAN April 14, 1931.

LOCK

Filed June 4, 1929 3 Sheets-Sheet l INVENTOR. flmyzm WQ Z'ZZQI? ATTORNEY.

April 14,- 1931. A WAR-HAN 1,800,707

LOCK

Filed June 4. 1929 5 Sheets-Sheet 3 INVENTOR. fim z'm Wa rtzlan.

ATTORNEY. v

Patented Apr. 14, 1931 PATENT OFFICE AVAGIM WARTIAN, F DETROIT, MICHIGANLOCK Application filed June 4, 1929. Serial No. 368,293.

This invention relates to improvements in locks, and aims, among otherthings, to provide a lock wherein a latch bolt is adapted to be actuatedeither by the longitudinal movement of a pusher extending through ahandle substantially at right angles to the path of travel of a latchbolt, or by the rotation of a key by which a locking bolt is alsooperated; and wherein the locking mech- 1o anism is so arranged thatwith one key, parts may be turned and the latch bolt or the looking boltactuated, and with another key certain other parts in the mechanism maybe so turned as to render the first key inoperative.

With these and various other objects and advantages in view which willbecome apparent as the specification proceeds, the invention ishereinafter more fully described with the aid of the accompanyingdrawings,

in which:

Figure 1 illustrates an end elevation of the lock in position in a door,and

Figure 2 shows a front elevation thereof.

Figure 3 is a side view of the lock with 95 one side of its casingremoved and the locking bolt retracted.

Figure 4 is a partial side view of the invention with one side of thecasing, the looking bolt cover plate and one of the tumblers a0 removed.

Figure 5 is a section on the line 5-5 of Figured.

Figures 6 and 7 are partially assembled views showing a part of thecasing with the rotatable buffer plate turned so as to render theordinary key inoperative.

Figure 8 is a section on the line 88 of Figure 6.

,Figure 9 is a section on the line 99 of Figure 7, and

Figure 10 is a section on the line 101O of Figure 1.

Referring to the drawings, 1 designates a lock casing having projections16 integral with one of its ends 1a, which are adapted to be secured asby screws 2a to a door '2 in the usual manner. Through the end 111. ofthe casing three apertures 3, 4 and 5 are provided. The aperture 3permits movement of a locking bolt'6 therethrough; through the aperture4 a latch bolt 7 is adapted to move, and into the aperture 5 one end ofa lever 8 extends so that its extremity is pivotally movable thereinabout a pin 9 which projects inwards from one side of the casing 1. Inthe side of the casing openings 10 and 11 are formed and 1d designates acover on the casing 1.

Spaced from the side of the casing 1 a by a portion of the door 2, andmounted on one side of the latter, is a faceplate 12. Pivotal on theinner side of the faceplate is a rocker 13,- the free end of whichextends through the cover opening 10. Through a tubular bearing 14 whichforms a portion of the handle 15 on the faceplate apusher 16 is axiallymovable. The latter has an offset inner end 17 which is adapted toengage the rocker 13 intermediately of its length and cause the outerend to swing in the casing 1 through the opening 10.

In the casing 1 is a bifurcated guide 18, and 19 is a sliding framehaving an extension 20 of lesser height in which the guide 18 projects.Against the end of the frame remote from the extension 20 one end of aspring 22 is so arranged as to tend to move the sliding frame 19 and itsextension towards the aperture 4 and to bring one end of the frame intocontact with the said bifurcated guide 18. The free end of the rocker 13terminates in the sliding frame 19 and movement of the rocker 13 causedby pressing the pusher 16 inwards causes the said frame 19 to moveagainst tension of the spring 22 and away from the aperture 4. Whenpressure on the pusher 16 is released the spring 22 causes the slidingframe 19 to move towards the aperture 4 thereby moving the rocker 13 andcausing the latter to move the pusher back into its outwardly extendingposition.

The lever 8 at its endremote from the aperture 5 is provided with tworecesses 23 and 23a either of which is adapted to engage a projection 24on the side of the casing 1." A tongue 25 also extends laterally fromthat end of the lever 8 so as to lie in a slot 26 formed in the side andend of the slidingframe 19 when the'projection 24 engages the 13 sisrecess 23. When the tongue extends through the slot 26 into the slidingframe it obstructs movement of the rocker 1 3 and thus renders thepusher inoperative. A coil spring 9a is arranged around the pin 9 tohold the lever 8 in position.

Integral with the latch bolt 7, which is slidable in the aperture 4, andextending inwardly therefrom, is a shaft 27 which passes between thebifurcations of the guide 18 and through a gap 28 formed in the adjacentend of the sliding frame 19. The end of the shaft remote from the latchbolt is enlarged so that it remains within the said frame 19, and aroundthe shaft between the latch bolt and a washer 7a thereon which isadapted to lie against the guide 18 is a helical spring 29 which tendsto hold the said bolt in outwardly extending position from the slidingframe and also pulls the latter towards the opening 4 in unison with thespring 22. Thus it will be seen that inward pressure on the pushernormally retracts the latch bolt 7 and that' by movement of the lever 8the pusher may be rendered inoperative. Moreover the latch bolt 7 isfree to be forced inward by contact with a striker plate (not shown)without moving the sliding frame 19.

On the inner site of the casing 1 are two guide pins 30 and 31, theformer of which is provided with an enlargement 30a adjacent the casing.The locking bolt 6 slidable in the aperture 3 has a plate 32 integralwith it. Through the plate 32 slots 33 and 34 are formed to receive thepins30 and 31, and to permit movement of the plate thereon as thelocking bolt is moved back and forth through the aperture 3. The sidesof the aperture 3 and the enlargement 30a of the guide pin-30 hold thebolt 6 and plate 32 spaced from the side of the casing 1 substantiallyparallel with which the plate 32 lies. On-one side of the plate 32tapped bosses 35 and a lug 36 are provided. Rotatably mounted on the pin30 adjacent the plate 32 is a buffer plate 37 having a radial slot 38therein adapted to receive the lug 36 when the locking bolt isretracted, and a plurality of uniformly spaced peripheral flutes 39, thepurpose of which will behereinafter described.

Extending from the inner side of the casing 1 are a plurality of drilledand tapped bosses 40, 41 and 42 the upper ends of which are substantillyflush with the upper sides of the casing 1. Into these holes screws (notshown) are inserted to hold the casing cover 1d in position. On a pin 43projecting from the inner side of the casing 1 a guard plate 44 ispivotally arranged, which has a slotted opening 45 therethrough for thepassage of the guide pin 30. One margin 44a of the guard plate 44 has adownturned edge in which a slot 44?) is formed to engage a peripheralsection of the buffer plate 37 be tween two of its adjacent flutes 39and thus movement of the cover with the locking bolt plate 32. Throughthe cover, holes are provided over the tapped bosses 35 for theinsertion of screws 51. On the cover 47 are two projections 52 and 53,on the former an upper tumbler 54 is pivotally arranged, and 55 denotesa spring secured to the said upper tumbler having its outer extremitybearing against the other projection 53. This spring tends to hold theupper tumbler in such position that one of its marginal recesses 56 or57 engages the guide pin 31 and holds the locking bolt against movement.

Pivotally mounted on the inner side of the casing 1 are two dogs 58 and59. One end of the dog 58 is adapted to contact one end of the extension20 of the sliding frame 19 and to move it away from the aperture 4, sothat the latch bolt 7 is retracted, and the opposite end of the dog 58is adapted to be moved by the dog 59. A projection 60 on the casing actsas a stop to limit the movement of the outer extremity of the dog 58'which strikes the extension 20, and that portion of the dog is normallyheld between the said stop 60 and the extension. The dog 59 at its end59a remote from the dog 58 is adapted to be moved by a locking mechanismhereinafter described. Thus the sliding frame 19 and the latch bolt 7are adapted to be actuated by movement of the dog 59.

Extending, over portions of the dogs 58 and 59 and arranged between themand the lockin boltplate 32 a lower tumbler 61 is pivota ly arranged ona pin 62 extending through and secured to the said plate 32. The pin 62is substantially in alignment with the pin 52 on which the upper tumbler54 is pivotally' mounted. Integral with the lower tumbler 61 is a pin 63the outer end of which engages a hole 64 in the upper tumbler 54. Thusthe two tumblers swing together about their aligned axes. Opposedmarginal portions 61a. and 54a of the tumblers are inturned towards oneanother.

In the opening 11 of the casing 1 one end of a cylinder 65 is suitablysecured. A plug 66 extends through the cylinder. 65 'and' is providedwith radial holes 67 o posite corresponding radial holes 68 in t ecylinder for the usual tumbler pins 69 and 70 and.

springs 71. In the plug is a usual key slot 72, and at its inner endis aperipheral groove 73 into which marginal portions of a twopi'ece splitwasher 74, which covers the end of the cylinder, extends. A distancepiece 75 usually rests on the split washer 74 and has a pin 76 securedto it which projects through one of the washer portions and into anaperture 77 formed longitudinally in the cylinder 65. This pin 76 has anenlarged head at its outer end, and around it between the head and theunderside of the washer portion through which the pin passes a helicalspring 78 is arranged around the latter. This spring tends to hold thedistance piece against the washer portions 74. Mounted on the distancepiece so as to be rotatable thereon but held against independent axialmovement is a cam 79. The latter is connected tothe plug 66 by pinswhich project into holes 80a in the said plug. 81 de; notes a retainingring on the washer portions having screws 81a passing through it andalso through the said washer portions and taking into the inner end ofthe cylinder 65.

When the short key 82, shown in Figure 9, is inserted in the key slot 72the cam 79 turns on the distance piece 75 and the latter remains againstthe washer portions 74. If, however, a long key 83 is inserted in thekey slot, as shown in'Figure 8, the distance piece is pushed away fromthe washer 74 and the cam 79 is rotated at a different level so that itcomes in contact with different portions of the lock mechanism. When thelong key 83 is employed and the distance piece 75 is moved the spring 78becomes compressed and returns the distance piece and the catch to theirnormal position, shown in Figure 9, as soon as the key is withdrawn.

When the short key 82 is turned the cam 79 contacts the inbent margin61a of the tumbler 61, and, on account of the connection between thesaid tumbler and the upper tumbler which is hereinbefore describedmovement of the lower tumbler 61 causes the said upper tumbler to movealso, and in such a manner that the marginal recess 56, or 57, be comesdisengaged from the guide pin 31 and the plate 32 and cover 47 arepermitted to move. As the cam 79 continues to turn it contacts one edgeor the other of an outwardly flared slot 32a in the plate 32 and causesthe latter to move thereby moving the bolt 6.

84 and '85 designate two projections on the plate32 by which the dog 59is moved pivotally by movement of the locking bolt 6, so that when thelatter is projecting forwardly the dog 59 is in such position that itcannot be reached by the cam 79. When the locking bolt is retracted asshown in Figure 3 movement of the cam 79 in the direction indicatedmoves the dog 59 and through it the dog 58 which latter in turn retractsthe latch bolt 7. It will be further noted that movement of the lockingbolt 6 and the plate 32 can only occur when the buffer plate 37 is sopositioned that the lug 36 can move into the radial slot 38.

Again the key. 83 can onlybe turned after the locking bolt 6 hasbeengnoved into looking position because when the bolt 6 is in retractedposition the lug 36 in the slot 38 prevents rotation of the buffer plate37. The key 83 moves the cam 79 into the plane of the guard plate 44 andthe butter plate 37. When the cam 7 9 is turned by the key 83 the guardplate 44 is first moved so that its marginal slot 446 disengages aperipheral section of buffer plate 37 between two adjacent flutes 39,and further movement of the catch engages the buffer plate between twoother adjacent flutes modifications as fall within the scope of theappended claims.

What I claim as my invention and desire to secure by Letters Patent is:

1. In a lock, the combination of a casing having apertures therethrough,a latch bolt slidable through one of said apertures, a sliding frame insaid casing, a lever pivoted in said casing having one extremity movablein another casing aperture, a rocker extending through a third casingaperture into said sliding frame by which the latter is adapted to be somoved that it retracts said latch bolt, means for moving said rocker,said frame having a slot formed therethrough, the other extremity ofsaid lever having two recesses therein, a projection in said casingadapted to engage either recess, means for holding either recess againstaccidental disengagement from said projection, and a lateral tongue onsaid lever adapted to project through the sliding frame slot when onerecess is in engagement with said projection and to hold said rockerimmovable in said sliding frame.

2. In a lock, the combination of a casing having apertures therethrough,a latch bolt slidable in one aperture, a shaft integral with said latchbolt, a sliding frame through one end of which said shaft extends, meanson said shaft holding its extremity within said sliding frame so thatthe former is moved when the latter moves in one direction, a springaround said shafttending to hold the latch bolt in extended position, aface-plate having an opening therethrough spaced from said casing andadapted to be mounted on one side of a door, a pusher movable axiallythrough said opening, a rocker pivoted on the inner side of saidfaceplate extending through one casing aperture into said slidinframe,the latter being adapted to be\so moved by said rockers-that itretracts said latch bolt,

and a lever pivoted in said casing having one extremity extending intoanother casing aperture, said lever being so positioned that when it' ismoved to one position it holds said rocker immovable.

3. In a lock, thecombination of a casing. having pinstherein and anaperture therethrough, a locking bolt movable through said aperture, aplate on said-locking bolt having a marginal recess and slotstherethrough through which said pins project, tumblers one on each side.of said plate pivotal about aligned axes, a spring connected to onetumbler adapted to hold the latter in engagement with one of said pinsand thereby prevent movement of said latch bolt, a lock cylinder mountedin said casing, a plug rotatable by a key in said cylinder, a camrotatable with said plug adapted to engage the other tumbler and swingboth tumblers so that the first named tumbler moves out of engagementwith its pin, and said cam being also adapted to engage one side or theother of the marginal recess in the plate and move the latter in onedirection or the other.

4. In a lock, the combination of a casing having an aperturetherethrough, a locking bolt slidable through said aperture, a plateintegral with said bolt having openings therethrough, pins in saidcasing extending throughcsaid openings, a lug on said plate, a butlerplate having a slot therein rotatable on one of said pins, said slotreceiving said lug when the lockin bolt is retracted, and said lug beingout o engagement with said slot when said locking bolt is extendedoutwardly, a cylinder mounted in said casing, a plug rotatable with akey in said cylinder, a cam rotatable with said .plug adjacent theinnerend of the latter, means on said plate for engaging said cam sothat the locking bolt may be moved in either direction by the rotationof said cam, said cam being also adapted to turn said bufier plate whensaid locking bolt is outwardly extended so that the latter cannot beretracted until said bufier plate is turned back to such position thatthe lug on the plate may enter said slot.

5. In a lock, the combination as described in claim 4 wherein the cam isaxially movable with a key relative to said plug so that said cam may beturned in one plane to cooperate with the locking bolt plate, or inanother plane to coact with the rotary buffer plate.

6. In a lock, the combination as described in claim 4 wherein a guardplate is pivoted on the locking bolt plate and normally adapted to holdthe butter plate against rotation, and the crm is movable axially with akey relative to the plug so that the cam may be turned in one plane tocooperate withthe locking bolt plate and move the lbcking bolt, or inanother plane to coact with the guard plate and said bufier so that itfirst releases the latter from the former and then turns the latter.

7. In a lock, the combination of a casing having an aperturetherethrough, a locking bolt movable through said aperture, a plateintegral with said locking bolt, a rotatable tatable with the latter,spring means tending to hold said cam adjacent said plug, said plugbeing adapted to be turned by the shorter key so that said catchcooperates with said locking bolt plate, and said plug being adapted tobe turned by the longer key which forces said catch away from said plugso that said cam engages said bufi'er plate and may turn it so as torender said locking plate immovable by said cam.

8. In a lock, the combination of a casing having an aperturetherethrough, a locking bolt slidable therein, a plate integral withsaid bolt having openings therethrough, pins in said casing extendingthrough said plate openings, a lug on said locking bolt plate, a rotarybafiie plate having a slot therein which receives said lug when thelocking bolt is retracted, a guard plate pivoted on said casing, saidbatlle plate having peripheral flutes between any adjacent two of whichit is normally engaged by said guard plate and held against rotation,means tending to hold said guard plate in engagement with said baflleplate, a cylinder mounted in said casing, a, plug rotatable by a longerand a shorter key in said cylinder, a cam rotatable with but axiallymovable relative to said plug, means for holding said locking bolt plateagainst accidental movement, said cam when turned by the shorter keybeing adapted to release the locking bolt holding means and move saidlate, and said catch when turned by the onger key being moved by thelatter away from the plug and being adapted to move the guard plate outof engagement with the bafile plate and turn the latter so that its slotcgnnot receive the lug on the locking bolt p ate.

9. In a lock, the combination of a casing having an aperturetherethrough and pins supported thereby, a locking bolt slidable in saidaperture, a plate on said locking bolt having openings therethroughthrough which said pins extend so that said plate is slidable on saidpins, a rotary bafile plate rotatable on one of said pins and having aplurality of peripheral flutes therein, a guard plate pivotal on saidcasing, a spring tending to hold said guard plate in engagement withaboth of said tumblers being in alignment with one another, meansconnecting said tumblers so that they turn together, said locking boltplate having a marginal recess therein, the

tumbler on the cover having two, marginal recesses therein to e age oneof the ins, one recess engagin t e pin when the oc ing bolt is extendedand the other recess engagin the pin when the locking bolt is retracts acylinder mounted in said casing, a plug rotatable by a key in saidcylinder, a cam adjacent the inner end of the plug and rotatabletherewith but movable axially relative thereto, said cam being ada tedto engage said locking bolt plate and t e tumbler pivoted thereon so asto turn said tumbler and thereby release the other tumbler from said pinand then move said locking bolt, or to engage said guard plate and saidbaflle plate and first release the latter from the former and then toturn the latter, and means on said locking bolt plate to preventretraction of the locking bolt when the baflle plate has been turned,said means preventing rotation of said baflle plate when said lockingbolt is retracted. I

10. In a lock, the combination of a cylinder, a'plug rotatable by alonger or a shorter key therein, said cylinder having a longitudinalopening therein, a split washer on said cylinder inner end, a peripheralgroove in said plug engaged by said split washer, a distance piecenormally on said washer, a cam on said distance piece, a projection onsaid a cam extending into said distance piece so that the cam isrotatable thereon, said cam being rotatable with said plug, a pinsecured to said distance piece extending through said split washer andterminating in a head located in said cylinder opening, a spring aroundsaid pin extending from said washer to said head tending to hold saiddistance piece on said washer, said distance iece and said cam beingadapted to be move axially from said washer when the longer key isinserted in the plug, a casin in which said cylinder is mounted a loc'ng bolt slidable therein, and a baflle pilate adapted to preventmovement of said loo move said locking bolt when turned in one plane byone key and being adapted to move the bafile plate by which said lockingbolt may be rendered immovable when turned in another plane by the otherkey.

AVAGIM WARTIAN.

ing bolt, said cam being adapted to

